WO2010127520A1 - Procédé d'accès aléatoire et station de base - Google Patents

Procédé d'accès aléatoire et station de base Download PDF

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Publication number
WO2010127520A1
WO2010127520A1 PCT/CN2009/072936 CN2009072936W WO2010127520A1 WO 2010127520 A1 WO2010127520 A1 WO 2010127520A1 CN 2009072936 W CN2009072936 W CN 2009072936W WO 2010127520 A1 WO2010127520 A1 WO 2010127520A1
Authority
WO
WIPO (PCT)
Prior art keywords
random access
relay
access preamble
base station
relay station
Prior art date
Application number
PCT/CN2009/072936
Other languages
English (en)
Chinese (zh)
Inventor
沈晓芹
马睿
杜忠达
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP09844272.6A priority Critical patent/EP2429252B1/fr
Priority to US13/256,920 priority patent/US20120069788A1/en
Publication of WO2010127520A1 publication Critical patent/WO2010127520A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603—Arrangements for wireless physical layer control
    • H04B7/2606—Arrangements for base station coverage control, e.g. by using relays in tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
    • H04W74/0875—Non-scheduled access, e.g. ALOHA using a dedicated channel for access with assigned priorities based access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations

Definitions

  • Each base station can be connected to one or more core network nodes (Core Network, called CN).
  • the core network is responsible for non-access layer transactions, such as location updates, etc., and is the anchor point for the user plane.
  • a terminal User Equipment, referred to as a UE refers to various devices that can communicate with a cellular wireless communication network, such as a mobile phone or a notebook computer.
  • a cellular wireless communication network such as a mobile phone or a notebook computer.
  • the terminal randomly accesses the base station: 1.
  • the terminal is initially accessed by the IDLE mode; 2.
  • the connection is reconstructed in the RRC mode; 3.
  • RRC- DL data arrives in CONNECTED mode; 5.
  • UL data arrives in RRC-CONNECTED mode.
  • the eNB In the second step, the eNB generates a random access response by the MAC on the DL-SCH. (Random Access Response, called RAR), and sent to the UE; In the third step, the UE performs scheduled transmission on the UL-SCH; and in the fourth step, the base station resolves the collision on the DL-SCH.
  • RAR Random Access Response
  • 3 is a signaling flowchart of non-contention based random access in the related art. As shown in FIG. 3, the non-contention based random access procedure includes the following processing: In the first step, the eNB passes a dedicated message in the DL. The RAP is allocated to the UE. In the second step, the UE sends the RAP to the eNB through the PRACH in the UL.
  • FIG. 6 is a method according to the present invention.
  • FIG. 7 is a flowchart of a random access method according to Embodiment 2 of the method of the present invention.
  • FIG. 8 is a block diagram of a base station according to Embodiment 1 of the apparatus according to the present invention;
  • FIG. 9 is a block diagram of a base station according to Embodiment 1 of the present invention;
  • the embodiments of the present invention provide a random access method and a base station.
  • Step S504 the base station receives the relay-specific random access preamble transmitted by the relay station on the predetermined random access slot of the radio frame, and the random access preamble sent by the ordinary terminal.
  • Step S506 the base station determines that the relay-specific random access preamble is received ( Can be received according to When the random access preamble identifier is used, the access priority of the relay station can be set to advanced, and the non-contention based random access is preferentially performed to the relay station.
  • the performing, by the base station, the non-contention-based random access to the relay station includes the following processes: 1. The base station sends a random access response message to the relay station; 2. If the relay station confirms that the random access response message is correctly received, the random access is completed. 3.
  • RAP eNBs are not broadcast to all UEs in the cell in the broadcast message, and are only sent to a certain terminal through a dedicated channel, so there is no need for competition.
  • a part of the RAPs may be selected as the Relay-specific RAPs in the (64 - nRAP) dedicated RAPs, and the number thereof is set to number Of Relay-Preambles (nRP).
  • the relay receives the random access response message in the response receiving window, and determines whether the two identifiers are expected values by comparing the RA-RNTI and the RAPID included in the local and received random access response messages. Specifically, if the Relay receives the RA-RNTI carried in the random access response message (in
  • a threshold may be set before the random access initialization (transmitting)
  • the power threshold ie, the threshold of PREAMBLE - RECEIVED - TARGET - POWER ).
  • the threshold is between the RAP transmit power of the Macro UE and the RAP transmit power of the Relay.
  • the Relay sends a random access preamble to the base station on a random access slot of the radio frame.
  • the preamble and the random access preamble sent by the ordinary terminal after the receiving module 82 receives the relay-specific random access preamble and the random access preamble sent by the ordinary terminal, the determining module 84 needs to determine whether the received random access preamble is The relay station dedicated random access preamble; in the case where the determination module 84 determines YES, the random access module 86 preferentially performs non-contention based random access to the relay station. It is to be understood that various changes and combinations may be made to the various modules described above without departing from the spirit and scope of the invention. Apparatus Embodiment 2 According to an embodiment of the present invention, a base station is provided, and FIG.
  • the threshold is between a RAP transmit power of the Macro UE and a RAP transmit power of the Relay, and is used by the base station to determine whether the received random access preamble is a random access preamble sent by the relay station.
  • the calculation formula of RAP transmission power is as follows:
  • the RAP received by the receiving module 92 may be assigned by the base station to the relay through a dedicated channel (numbering from nRAP to 63), or may be selected by the relay itself, and the selection range is that the base station broadcasts to all UEs in the cell in the broadcast channel.
  • Optional RAP (numbering from 0 to nRAP - 1).
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention se rapporte à un procédé d'accès aléatoire et à une station de base. Le procédé comprend les étapes suivantes : une station de base attribue à un relais un préambule d'accès aléatoire (RAP) dédié à un relais, le RAP dédié à un relais indiquant que la priorité d'accès du relais est plus élevée que celle d'un terminal ordinaire (S502) ; la station de base reçoit un RAP dédié à un relais envoyé par le relais et un RAP envoyé par un terminal ordinaire (S504) et, quand elle détermine que le RAP reçu correspond au dit RAP dédié à un relais, la station de base exécute de façon préférentielle un accès aléatoire sans conflit d'accès pour le relais (S506). Grâce à ce procédé, le temps nécessaire au relais pour accéder de façon aléatoire à un réseau est réduit, et le taux de réussite d'accès aléatoire du relais à un réseau est amélioré.
PCT/CN2009/072936 2009-05-05 2009-07-27 Procédé d'accès aléatoire et station de base WO2010127520A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09844272.6A EP2429252B1 (fr) 2009-05-05 2009-07-27 Procédé d'accès aléatoire et station de base
US13/256,920 US20120069788A1 (en) 2009-05-05 2009-07-27 Random access method and base station

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910137298.XA CN101883437B (zh) 2009-05-05 2009-05-05 随机接入方法以及基站
CN200910137298.X 2009-05-05

Publications (1)

Publication Number Publication Date
WO2010127520A1 true WO2010127520A1 (fr) 2010-11-11

Family

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Family Applications (1)

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PCT/CN2009/072936 WO2010127520A1 (fr) 2009-05-05 2009-07-27 Procédé d'accès aléatoire et station de base

Country Status (4)

Country Link
US (1) US20120069788A1 (fr)
EP (1) EP2429252B1 (fr)
CN (1) CN101883437B (fr)
WO (1) WO2010127520A1 (fr)

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US10165527B2 (en) 2011-02-21 2018-12-25 Samsung Electronics Co., Ltd. Method of efficiently reporting user equipment transmission power and apparatus thereof
US11202285B2 (en) 2011-02-21 2021-12-14 Samsung Electronics Co., Ltd. Method and apparatus of configuring downlink timing and transmitting random access response in mobile communication system using carrier aggregation
US11284391B2 (en) 2011-04-05 2022-03-22 Samsung Electronics Co., Ltd. Method and device for carrier activation in carrier aggregation system
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US10165527B2 (en) 2011-02-21 2018-12-25 Samsung Electronics Co., Ltd. Method of efficiently reporting user equipment transmission power and apparatus thereof
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US10602492B2 (en) 2011-04-05 2020-03-24 Samsung Electronics Co., Ltd. Method and apparatus of configuring downlink timing and transmitting random access response in mobile communication system using carrier aggregation
US10098106B2 (en) 2011-04-05 2018-10-09 Samsung Electronics Co., Ltd. Method and apparatus for managing multiple timing advance groups in mobile communication system supporting carrier aggregation
US10645691B2 (en) 2011-04-05 2020-05-05 Samsung Electronics Co., Ltd. Method and device for carrier activation in carrier aggregation system
US9288801B2 (en) 2011-04-05 2016-03-15 Samsung Electronics Co., Ltd Method and device for transmitting random access and other uplink channels of other cell in mobile communication system carrier aggregation
EP2696522A4 (fr) * 2011-04-05 2015-04-15 Samsung Electronics Co Ltd Procédé et dispositif permettant de transmettre un accès aléatoire et d'autres canaux de liaison montante d'une autre cellule dans une agrégation de porteuses d'un système de communication mobile
US11178656B2 (en) 2011-04-05 2021-11-16 Samsung Electronics Co., Ltd. Method and apparatus of operating multiple time alignment timers in mobile communication system supporting carrier aggregation
US20140341011A1 (en) 2011-04-05 2014-11-20 Samsung Electronics Co., Ltd. Method and apparatus for controlling random access in wireless communication system supporting carrier aggregation
US11284391B2 (en) 2011-04-05 2022-03-22 Samsung Electronics Co., Ltd. Method and device for carrier activation in carrier aggregation system
EP2696522A2 (fr) * 2011-04-05 2014-02-12 Samsung Electronics Co., Ltd. Procédé et dispositif permettant de transmettre un accès aléatoire et d'autres canaux de liaison montante d'une autre cellule dans une agrégation de porteuses d'un système de communication mobile

Also Published As

Publication number Publication date
CN101883437B (zh) 2014-12-10
EP2429252B1 (fr) 2016-05-04
EP2429252A4 (fr) 2014-03-26
EP2429252A1 (fr) 2012-03-14
CN101883437A (zh) 2010-11-10
US20120069788A1 (en) 2012-03-22

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